*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body,#app{
    width: 100%;
    height: 100%;
    background: #eee;
    min-width: 1500px;
}
#app{
    padding: 10px;
}

.one{
    width:0;
    height:0;
    border:5px solid transparent;
    box-sizing: border-box;
}
.ones{
    border-bottom-color:red;
}
.twos{
    border-top-color:green;
}
.el-card{
    margin-top: 20px;
}

